/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ai.h2o.sparkling.backend.utils

import org.apache.spark.expose.Logging

trait ShellUtils extends Logging {
  protected def launchShellCommand(cmdToLaunch: Seq[String]): Int = {
    import scala.sys.process._
    val processOut = new StringBuffer()
    val processErr = new StringBuffer()

    val proc = cmdToLaunch
      .mkString(" ")
      .!(ProcessLogger({ msg =>
        processOut.append(msg + "\n")
        println(msg)
      }, { errMsg =>
        processErr.append(errMsg + "\n")
        println(errMsg)
      }))

    logInfo(processOut.toString)
    logError(processErr.toString)
    proc
  }
}
